摘要
应用3D-Sigma软件对小湾河谷的右岸边坡进行了河谷自然下切、河谷一次下切和河谷不下切3种情况下的三维有限元弹塑性模拟,获得了3种模拟方案下的应力及变形结果,并进行了对比。认为下切过程对类似小湾库区河谷的边坡内应力、变形和坡体稳定性都有一定的影响,并从应力和变形角度解释了山体内裂隙的形成原因。
Three kinds of analysis, i.e. unloading in five progresses, unloading in one progress, not unloading, in the rock slope formed by erosion of the river in Xiaowan Dam site are simulated using a program 3D-Sigma(FEM). The results of stress,deformation under the three kinds of analysis are obtained and are compared. In the slopes similar to Xiaowan Dam site slope, the unloading progress has some certain effect on the stress, deformation and stability of slopes. And the fissures can be formed in the deep slope masses by unloading progress.
出处
《自然灾害学报》
CSCD
北大核心
2005年第2期103-107,共5页
Journal of Natural Disasters
基金
国家自然科学基金资助项目(40272117)
2002年高等学校博士学科点专项科研基金项目资助〔(2002)科技字(839)〕
关键词
三维有限元
卸荷
对比
D-FEM analysis
unloading
comparison
